On 2022-11-06, Marcus MERIGHI <mcmer-open...@tor.at> wrote:
> barbarosb...@gmail.com (Barbaros Bilek), 2022.11.05 (Sat) 23:22 (CET):
>> I have Sierra Wireless EM7455 on my OpenBSD 7.2 router device.
>> OpenBSD detects this card like this:
> [...]
>> Is it possible to convert this card into MBIM mode to get an umb device?
>> Thanks.
>
> The man page of umb(4) lists this device, so it should work.
> You could try disabling umsm(4) with config(8) and see if this
> makes it attach as umb(4)
These devices can be set to present different USB configurations
("compositions") from a selection of possible types - MBIM, NMEA
(GPS), AT commands (umsm) etc.
It can be done via AT command (!USBCOMP) but with certain settings
you won't be able to send AT commands to get it back to the previous
config.
Probably the safest way to set them is via mbimcli on Linux:
https://forum.sierrawireless.com/t/mc7455-stuck-in-mbim-only-usb-composition/8499/15
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